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RE: libcurl cache?

From: Michael Smith <mikes_at_VERTIGO.NET>
Date: Fri, 1 Apr 2005 10:44:59 -0500

I am using libcurl 7.12.1. I have tried the following, and have no improvement:

        pheaders = curl_slist_append(pheaders,"Pragma: no-cache");
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, pheaders);

The symptoms are quite clear:
When the contents of a previously downloaded file are changed on the web server, with the CURLOPT_NOBODY option set the new filesize and modified time are not reflected.

When we delete the Internet Explorer cache using the IE options on the client, the new changes are reflected.

This is a sample URL

Can anyone guide me to which http headers might be helpful?


-----Original Message-----
[]On Behalf Of Dan Fandrich
Sent: Tuesday, March 29, 2005 4:19 PM
Subject: Re: libcurl cache?

On Tue, Mar 29, 2005 at 02:09:32PM -0500, Michael Smith wrote:
> This may be a very silly question, but I'm still going to ask it.
> Does the libcurl have its own cache similar to a web browser for instance?
> In the following code purl->fGetBodyContent is set to FALSE and somehow I have
> been told that dwFileSize and lLastModified time remain the same eventhough the
> file has been updated on the webserver. Is this possible?

Could there be a proxy between you and the host that's doing the caching
(an explicit one or a transparent one)? Try adding the appropriate HTTP
headers to disable proxy caching along the path of the request.

>>> dan

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Received on 2005-04-01